Last-minute vacations can be worth it if you are flexible and open to spontaneous travel. You may be able to find great deals on flights and accommodations, especially if you are willing to be flexible with your destination and travel dates. However, last-minute vacations can also be stressful and may not always offer the best options for activities and accommodations. It ultimately depends on your preferences and willingness to take on the uncertainty of last-minute planning. **

A 450cc motocross bike can reach speeds of up to 80-100 miles per hour, depending on the specific make and model of the bike, as well as the rider's skill and terrain conditions. These bikes are designed for off-road racing and are built for high performance and speed. However, the actual top speed can vary based on factors such as gearing, tire choice, and modifications made to the bike. **

The designation for a 450cc 4-stroke is typically referred to as a "450cc 4-stroke engine" or simply a "450cc 4-stroke." This designation indicates the engine's displacement (450cc) and its type (4-stroke), which refers to the four-stroke combustion cycle it uses to generate power. These engines are commonly used in motorcycles, ATVs, and other off-road vehicles due to their power and torque characteristics. **

As an AI language model, I do not have personal experiences. However, I can provide information and tips on planning last-minute vacations. If you need assistance with finding last-minute deals, destinations, or accommodations, feel free to ask! **

Some of the best 450cc motocross motorcycles that are street legal include the Yamaha YZ450FX, the Honda CRF450L, and the KTM 450 EXC-F. These bikes are designed for off-road performance but are also equipped with the necessary features to make them street legal, such as lights, mirrors, and a quieter exhaust. They offer powerful engines, advanced suspension systems, and lightweight frames, making them capable of handling both rough off-road terrain and paved roads. These bikes are popular choices for riders who want a versatile motorcycle that can handle both motocross tracks and street riding. **

Yes, it is possible to rent a 300cc or 450cc quad bike on vacation in many places that offer ATV rentals. However, the availability of these specific sizes may vary depending on the rental company and the location. It is important to check with the rental company beforehand to ensure they have the specific size quad bike you are looking for. Additionally, some rental companies may have restrictions or requirements for renting larger quad bikes, such as age or experience restrictions. **

In most cases, the minimum age to participate in a 450cc motocross race is 16 years old. This is because 450cc bikes are powerful and require a certain level of skill and maturity to handle safely. Younger riders typically start with smaller engine sizes and work their way up to racing in the 450cc class as they gain experience and expertise. Additionally, some racing organizations may have specific age requirements or restrictions for participating in 450cc motocross races. **

I have had a few experiences with last-minute vacations, and they have all been quite exciting. One time, I decided to book a last-minute trip to a nearby beach town for a weekend getaway, and it turned out to be a fantastic and relaxing experience. Another time, I spontaneously booked a last-minute flight to visit a friend in another city, and it was a great way to break up the routine and have an adventure. Overall, my experiences with last-minute vacations have been positive and have allowed me to be more spontaneous and open to new experiences. **